:root{--color-bg:#0f0f1a;--color-surface:#1a1a2e;--color-text:#e8e8e8;--color-text-muted:#999;--color-accent:#2563eb;--color-border:#333;--max-width:1200px;--spacing:1rem;--radius:8px}*,:after,:before{box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased}body{background:var(--color-bg);color:var(--color-text);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;margin:0}a{color:inherit}.container{margin:0 auto;max-width:var(--max-width);padding:0 var(--spacing)}.section-title{font-size:1.75rem;margin:0 0 1.5rem;text-align:center}.btn{background:var(--color-accent);border:none;border-radius:var(--radius);color:#fff;cursor:pointer;display:inline-block;font-size:1rem;padding:.75rem 1.5rem;text-decoration:none;transition:opacity .2s}.btn:hover{opacity:.9}